
accessid = ''
accesskey = ''
host = ''
policyBase64 = ''
signature = ''
// callbackbody = ''
filename = ''
key = ''
expire = 0
g_object_name = ''
oldfilename=''
g_object_name_type = 'random_name'
now = timestamp = Date.parse(new Date()) / 1000;
//必传参数
var  serviceType="aggregation";
function send_request()
{
    var xmlhttp = null;
    if (window.XMLHttpRequest)
    {
        xmlhttp=new XMLHttpRequest();
    }
    else if (window.ActiveXObject)
    {
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }

    if (xmlhttp!=null)
    {
        var serverUrl = ossUrl+"?serviceType="+serviceType;
        // console.log(serverUrl);
        //serverUrl = 'http://localhost:8080/v1.0/OSS/policyAndCallBack'+"?serviceType="+serviceType;
        xmlhttp.open( "GET", serverUrl, false );
        xmlhttp.send( null );
        // console.log('xmlhttp.responseText', xmlhttp.responseText);

        return xmlhttp.responseText
    }
    else
    {
        alert("Your browser does not support XMLHTTP.");
    }
};

function get_signature()
{
    //可以判断当前expire是否超过了当前时间,如果超过了当前时间,就重新取一下.3s 做为缓冲
    now = timestamp = Date.parse(new Date()) / 1000;
    if (expire < now + 3)
    {
        body = send_request()
        var obj = eval ("(" + body + ")");
        host = obj['host']
        policyBase64 = obj['policy']
        accessid = obj['accessid']
        signature = obj['signature']
        expire = parseInt(obj['expire'])
        // callbackbody = obj['callback']
        key = obj['dir']
        return true;
    }
    return false;
};

function random_string(len) {
    len = len || 32;
    var chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
    var maxPos = chars.length;
    var pwd = '';
    for (i = 0; i < len; i++) {
        pwd += chars.charAt(Math.floor(Math.random() * maxPos));
    }
    return pwd;
}

function get_suffix(filename) {
    pos = filename.lastIndexOf('.')
    suffix = ''
    if (pos != -1) {
        suffix = filename.substring(pos)
    }
    return suffix;
}
//上传文件
function uploadFile(data) {
	
    params = data;
    if(uploader.files.length==0){
    	return null;
    }
    set_upload_param(uploader, '', false);
    // console.log("host", host);
    // console.log("g_object_name", g_object_name);
    return host+"/"+g_object_name+";"+oldfilename;
}
function uploadFileName(data) {
    
    params = data;
    if(uploader.files.length==0){
        return null;
    }
    set_upload_param(uploader, '', false);
    // console.log("host", host);
    // console.log("g_object_name", g_object_name);
    return oldfilename;
}
 
function calculate_object_name(filename)
{
	oldfilename = filename 
    if (g_object_name_type == 'local_name')
    {
        g_object_name += filename
    }
    else if (g_object_name_type == 'random_name')
    {
        suffix = get_suffix(filename)
        g_object_name = key + random_string(10) + suffix
    }
    // console.log('calculate_object_name-g_object_name_type ', g_object_name_type);
    // console.log('calculate_object_name-g_object_name', g_object_name);
    return ''
}

function get_uploaded_object_name(filename)
{
    if (g_object_name_type == 'local_name')
    {
        tmp_name = g_object_name
        tmp_name = tmp_name.replace("${filename}", filename);
        return tmp_name
    }
    else if(g_object_name_type == 'random_name')
    {
        return g_object_name
    }
}

function set_upload_param(up, filename, ret)
{
    if (ret == false)
    {
        ret = get_signature()
    }
    g_object_name = key;
    if (filename != '') {
        suffix = get_suffix(filename)
        calculate_object_name(filename)
    }
    new_multipart_params = {
        'key' : g_object_name,
        'policy': policyBase64,
        'OSSAccessKeyId': accessid,
        'success_action_status' : '200', //让服务端返回200,不然，默认会返回204
        // 'callback' : callbackbody,
        'signature': signature,
        'x:params':params//自定义编码，basse64编码后的字符串
    };

    up.setOption({
        'url': host,
        'multipart_params': new_multipart_params
    });

    up.start();
}

var uploader = new plupload.Uploader({
    runtimes : 'html5,flash,silverlight,html4',
    browse_button : 'selectfiles',
    multi_selection: false,
    container: document.getElementById('container'),
    flash_swf_url : 'lib/plupload-2.1.2/js/Moxie.swf',
    silverlight_xap_url : 'lib/plupload-2.1.2/js/Moxie.xap',
    url : 'http://oss.aliyuncs.com',

    filters: {
        mime_types : [ //只允许上传图片和zip,rar文件
            // { title : "Image files", extensions : "jpg,gif,png,bmp" },
            // { title : "Image files", extensions : "jpg,png,mp3,mp4,WAV,WMA,3GPP,M4A,APE,MIDI,AMR" }
            { title : "Image files", extensions : "jpg,png,jpeg,gif,bmp,mp3,mp4,wav,wma,3gpp,m4a,ape,midi,amr" }
            // { title : "Zip files", extensions : "zip,rar" }
        ],
        max_file_size : '500mb', //最大只能上传500mb的文件
        prevent_duplicates : false //不允许选取重复文件
    },

    init: {
        PostInit: function() {
            document.getElementById('ossfile').innerHTML = '';
            // document.getElementById('postfiles').onclick = function() {
            //     set_upload_param(uploader, '', false);
            //     return false;
            // };
        },

        FilesAdded: function(up, files) {
            //只能选择一个文件上传
            $.each(up.files, function (i, file) {
                if (up.files.length <= 1) {
                    return;
                }

                up.removeFile(file);
            });

            plupload.each(files, function(file) {
                document.getElementById('ossfile').innerHTML = '<div id="' + file.id + '">' + file.name + ' (' + plupload.formatSize(file.size) + ')<b></b>'
                    +'<div class="progress"><div class="progress-bar" style="width: 0%"></div></div>'
                    +'</div>';
            });
        },

        BeforeUpload: function(up, file) {
            set_upload_param(up, file.name, true);
        },

         UploadProgress: function(up, file) {
             var d = document.getElementById(file.id);
             d.getElementsByTagName('b')[0].innerHTML = '<span>' + file.percent + "%</span>";
             var prog = d.getElementsByTagName('div')[0];
             var progBar = prog.getElementsByTagName('div')[0]
             progBar.style.width= 2*file.percent+'px';
             progBar.setAttribute('aria-valuenow', file.percent);
         },

        FileUploaded: function(up, file, info) {
            if (info.status == 200)
            {
                // document.getElementById(file.id).getElementsByTagName('b')[0].innerHTML = 'upload to oss success, object name:' + get_uploaded_object_name(file.name);
                up.removeFile(file);
                // uploadCallBack();
                // 上传成功回调
                fileUploadCallback();
            }
            else
            {
                document.getElementById(file.id).getElementsByTagName('b')[0].innerHTML = info.response;
            }
        },

        Error: function(up, err) {
            if (err.code == -600) {
                // document.getElementById('console').appendChild(document.createTextNode("\n选择的文件太大了,可以根据应用情况，在upload.js 设置一下上传的最大大小"));
                // alert("选择的图片不能超过500mb", {icon: 2});
                if(addCustomerVM){
                    addCustomerVM.$message({
                        message: '选择的图片不能超过500mb',
                        type: 'warning'
                    });
                }
                
            }
            else if (err.code == -601) {
                // document.getElementById('console').appendChild(document.createTextNode("\n选择的文件后缀不对,可以根据应用情况，在upload.js进行设置可允许的上传文件类型"));
                // layer.alert("请上传图片", {icon: 2});
            }
            else if (err.code == -602) {
                // document.getElementById('console').appendChild(document.createTextNode("\n这个文件已经上传过一遍了"));
               // alert("这个文件已经上传过一遍了", {icon: 2});
               if(addCustomerVM){
                    addCustomerVM.$message({
                        message: '这个文件已经上传过一遍了',
                        type: 'warning'
                    });
                }
            }
            else
            {
                // document.getElementById('console').appendChild(document.createTextNode("\nError xml:" + err.response));
                // alert("请上传图片", {icon: 2});
                if(addCustomerVM){
                    addCustomerVM.$message({
                        message: '请上传图片',
                        type: 'warning'
                    });
                }

            }
        }
    }
});

uploader.init();
 
